公开(公告)号：GB717446A

公开(公告)日：1954-10-27

申请号：GB1784952

申请日：1952-07-15

Applicant: STANDARD OIL DEV CO

Inventor： KOONTZ JOHN DANA

IPC: C07C45/50

Abstract: In the process of the parent Specification the reaction product from the initial synthesis stage is freed from dissolved catalyst by adding liquid water to the reaction product and heating the mixture to an elevated temperature at which it is maintained for a sufficient time to decompose the catalyst compound. Preferably from 2 to 50 per cent by volume of water is added and the temperature maintained at 250-500 DEG F. with pressures of 0-500, especially 50-175 p.s.i.g. The reaction products are allowed to settle and catalyst recovered from the aqueous layer, e.g. as cobalt formate or basic formate, and returned to the synthesis. The product layer may be hydrogenated to alcohols or oxidized to acids. A residence time of about two hours is given. The crude aldehyde product may be degassed, e.g. by reducing pressure, before water treatment. Cobalt and iron are specified catalysts. Tests are described in which decobalting by water injection is shown to be superior to steam or thermal treatment.